9/28 Write a program to swap the values of two variables

Question

Write a program to swap the values of two variables. The program will ask the user to input variables x and y with numerical values. You must write code that exchanges their values: the value of x after your code runs must equal the value that y had before your code ran, and the value of y after your code runs must equal the value that x had before your code ran.

寫一個交換兩個變數的程式

Example input:

3
5

Example output:

5
3

Remember: Your output may be 100% correct, but your code matters!

Comments

u

Answer 1

Hidden content!
#include<stdio.h>

int main()
{
 * **    *   * *****  *  *** a,b,swap;
***      *  *****    **   * *   **   ****  *******  ** * ******* 
**   *  *     ***  ***** *  ** *
*  ***    *  ******       **
* *****      **  ** * ** *** **
**    *  * ***     *      **  *** * ***  ****   ** ** 
  ** * *   ** ***  *  ***  * ***** 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 2

Hidden content!
#include <stdio.h>
int main()
{
**** *** * **  **   *** *    * first_number;
* *** **  * *   * * * *   ****  second_number;
 ***  ** *****  * * * *   * *  swap;

* *****  *    *  *****    **        * ** * *** * ** *** ******    * ***   *****  ****** 


* *****   **   *** *****    * **   * *
 * * ****   ** **     * *    *  **   *** **  **  *
 *** ****    *  * ****** ******     *     *** *

******      * * *  ** **  ***** **     *  **    *****  *  * );
* *     ** ** **   *  ***  *  *  *    *  **** *        
 * **  ***    ***   *** *  *   * 0;

}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 3

Hidden content!
#include<stdio.h>
int main(){
*   ** ** *    *  **    * * * a,b,temp;
**     ***  ** ****  **  ** * **     * **** **  ** ** ** **   ** ******  
****    *    **     **      *  ********   * *
*    **  **   * * *  * *  ***  *  ****  ** *****   * *
return 0;}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 4

Hidden content!
#include<stdio.h>
int main()
{
int a,b;
     *** *  ** *  * ***  *  ** * ***  ****      ***       **
 **** *  * ***   ***  * *   ** *       ***   *     ** 
  **  * * **  **  * **   ***  * *
** *   ** * * ******* ***         *
  ****   * ** *  * *   *** ***
*    *  **   *    * * ** * **** * * *   ** **  ***
return 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 5

Hidden content!
**    * ***** ** ** 
**  *   (){
  **  ** 
 *   * *** **    **  of x and y:   * * **
*   ***  * * *  **  *****   ** 
* *  ** ** *  * * * of x= %d and the   * of y         * * 
*   * ** 
* **
 ** * **   
 ** *     *  *  *   x   y  *   *  **       **   * 


 *  ** 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 6

Hidden content!
 *   ***  * ** *  * * **
int    ***
{
**  *     * a,b,swap;
*   **   *  *  *** * * * **    
 *  * ** * *****     ** ** * *
swap=a;
a=b;
b=swap;
** *****    *    ****  * a);
  ** *** ** ******  ** * *
* *   * * * * ***     0 ;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 7

Hidden content!
 * *  ****  ***  * 
main()
{
   *   ***  * * * ***
**  *  ** **  **  *** *** **
***  **  ** ** *  ** ******  ***
swap=a;
a=b;
b=swap;
*    ***   * *   a);
 ** ****   **    **   ** 
* *     **    **  0 ;
}

Comments

prog.c:2:1: warning: return type defaults to 'int' [-Wimplicit-int]
 main()
 ^~~~

Answer 8

Hidden content!
   ***  * * *** **
 int main(){
int a,b;

     ** *   ***     ***  ***      *  ******   ** ** * * *  * *   * *  

**** ****  *** *    *** **   **  * **** ** *****  * * 

return 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 9

Hidden content!
** * *    *** *** ***
**** *  ** main(){
int a,b;

*  **     * ** **** * ** * * *   * *****  * *   * **   * *   ** * * * * 

 ***   *  ** * **** ** * *     * *      *  *  * * 

return 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 10

Hidden content!
#include <stdio.h>

int main(){
  ** *  *****  * * *** ** 
  *  *      ** * *   * x,y,temp;
**   **** *  *    * *  **  *
**   ** *  *******     ***     **  *   *** * * ** **  *
* *    **    * *  *  * *    *    * ***  ***   *  *  **
    
   **  *  **    *  * **   *** = x;
*    ***  ***      *  ***    = y;
 *  ** ** *** * *** * ** *  = temp;
 **     * **** **    ** *
* **   ** * **  * ** * *   ****** * *  **  x,y);
    *  * **** *  * * * ** *
**** *   ****  **  ** *** *  **   0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output